6 gal fluval edge stocking

debit202

I'm thinking of getting a biorb 8 gallon. I have a beta already so he will evently go in there- then maybe something else- not sure about the filtration system on this tank- any one have any comments on these tanks or there systems? I'm new and am agonizing over a tank that will be the right size for my space(think small) and big enough for the fish. Do you all think the eclipse bio wheel filtration system is the best? The different filtering systems have me sooo confused!